#include<stdio.h>
#include<string.h>
int main(int argc,char const* argv[]){
   char* s1="abc";
   char s2[]="Abc";
  // strncpy(s2,s1,3);
   //strncat(s2,s1,3);
 
   printf("%d\n",strncmp(s2,s1,4)  );
   return 0;
   
}